# Surface Builder vs Wristrax

The clearest difference is price: Wristrax at Free against Surface Builder's $14.99. Wristrax also leads on rating (5.0 vs 4.7) and update cadence (weekly vs every 3 weeks). Surface Builder's advantage is in-app purchases (none vs 2) and ratings volume (15 vs 1). On ads and device support there is nothing between them.

Wristrax is free to download; Surface Builder costs $14.99 up front. Wristrax sells 2 in-app purchases, starting at $8.99 per year. Surface Builder asks for nothing beyond the download.

Wristrax holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Surface Builder has 15 ratings behind it against 1, so its average is the more settled of the two.

Surface Builder ships an update every 3 weeks, Wristrax weekly. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Surface Builder | Wristrax |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | [4.7 (15 ratings)](https://appshunter.io/ios/app/surface-builder/id6449735778/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wristrax/id6758014508/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 32 MB | 13 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [4Pockets.com](https://appshunter.io/developer/370131860) | [Holger Schueler](https://appshunter.io/developer/1870282096) |

## What reviewers say

### Surface Builder

[App page](https://appshunter.io/ios/app/surface-builder/id6449735778)

Create custom MIDI control surfaces for audio applications. Design interfaces with buttons, knobs, and faders to send and receive MIDI data, control audio clips, and customize appearance. Supports AUv3 plugins and standalone use.

**Highlights:** Customizable MIDI control surfaces, AUv3 plugin and standalone modes, Send/receive MIDI data (notes, controllers, pitch bend), Audio clip playback control, Multi-scene interface design, Drag and drop interface customization

**Features:** macOS Compatibility

**In-app purchases:** none


### Wristrax

[App page](https://appshunter.io/ios/app/wristrax/id6758014508)

Access and play your personal music library from your Apple Watch. Browse artists, albums, and playlists, then download and transfer tracks for offline listening without needing your phone.

**Highlights:** Offline Plex music playback, Browse artists, albums, playlists, Download tracks to phone, Transfer music to Apple Watch, Play music with connected AirPods, Supports Play Now widget

**Features:** Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Unlocked | $8.99 | per year |
| Lifetime Unlimited | $24.99 | one-time |


## Frequently asked questions

### Is Surface Builder free?

Surface Builder costs $14.99, with no in-app purchases.

### Is Wristrax free?

Wristrax is free to download, with in-app purchases available.

### Which has better reviews, Surface Builder or Wristrax?

Wristrax is rated higher. Surface Builder averages 4.7 out of 5 from 15 ratings, while Wristrax averages 5.0 from 1 ratings.

### Do Surface Builder or Wristrax have ads?

Neither Surface Builder nor Wristrax shows ads.

### Which is updated more often, Surface Builder or Wristrax?

Surface Builder ships an update every 3 weeks, and Wristrax weekly. Most recently, Surface Builder was updated on September 22, 2026 and Wristrax on September 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*